The discovery of the new evidence led to ______.
| A．the thief having caught | B．catch the thief |
| C．the thief being caught | D．the thief to be caught |
Would you consider lying to a good friend to avoid ____ your friend’s feelings？If so, what kinds of things would you lie about?
| A．hurting | B．to hurt | C．being hurt | D．hurt |
It is not until recently ______ the scientists have found proof of there being water on Mars.
| A．when | B．that | C．how | D．what |
______ our horizons of thinking, but it also saves us time and energy.
| A．Not only does the Internet expand | B．Not only expands the Internet |
| C．Not only the Internet expands | D．Not only the Internet does expand |
An excellent way to help memory is to connect information with pictures, which ______ as a memory-link method.
| A．considers | B．is considering | C．is considered | D．Considered |
Air bags for cars were invented _____ lives. Without them more people would be injured in car accidents.
| A．saving | B．saved | C．to save | D．to have saved |